package com.sky.mapper;

import com.sky.entity.SetmealDish;
import org.apache.ibatis.annotations.Delete;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Select;

import java.util.List;

@Mapper
public interface SetmealDishMapper {


    /**
     * 根据菜品id查询对应套餐id的数量
     *
     * @param id
     * @return
     */
    @Select("select count(setmeal_id) from setmeal_dish where dish_id = #{id};")
    Long getSetmealCountById(Long id);

    /**
     * 批量保存套餐和菜品的关联关系
     *
     * @param setmealDishes
     */
    void insertBatch(List<SetmealDish> setmealDishes);

    /**
     * 根据套餐ids，删除关系表中对应数据
     *
     * @param setmealIds
     */
    void deleteBySetmealIds(List<Long> setmealIds);

    /**
     * 根据套餐id，查询出套餐和菜品的关联关系
     * @param setmealId
     * @return
     */
    @Select("select * from setmeal_dish where setmeal_id = #{setmealId}")
    List<SetmealDish> getBySetmealId(Long setmealId);

    /**
     * 根据一个套餐id，删除数据
     * @param setmealId
     */
    @Delete("delete from setmeal_dish where setmeal_id = #{setmealId}")
    void deleteBySetmealId(Long setmealId);

}
